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Chemistry

Chemistry
The percentage of Nitrogen in Air is

0.94
85.02
78.03
0.03

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Chemistry
For a spontaneous chemical process, the free energy change is

Depends on whether the reaction is exothermic or endothermic
Zero
Negative
Positive

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Chemistry
Thermal electricity is generated by using which of these ?

Coal and Natural Gas only
None of these
Coal, Natural Gas and Petroleum
Coal only

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Chemistry
The major component in the LPG is

Ethane
Propane
Butane
Methane

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Chemistry
The process of removing calcium and magnesium from hard water is known as

Flocculation
Water softening
Sedimentation
Filtration

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Chemistry
Iodine can be separated from a mixture of Iodine and Potassium Chloride by

Filtration
Distillation
Sedimentation
Sublimation

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